Alois winkler



A. WINKLER. EMBOSSED SIGN PLATE.

(No Model.)

Patented June 6, 1893.

Arm/7 WITNESSES.

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UNITED STATES PATENT OFFICE.

ALOIS \VINKLER, OF VIENNA, AUSTRIA-HUNGARY.

EMBOSSED SIGN-PLATE.

SPECIFICATION'forming part of Letters Patent No. 498,923, dated June 6, 1893.

Application filed June 4, 1891. $erial No. 395,151. (No model.)

T at whom it'malz concern.-

Be it known that I, ALoIs WINKLER, a subject of the Emperor of Austria-Hungary, re-

siding at Vienna, Austria-Hungary, have invented certain new and useful Improvements in Embossedsign-Plates, of which the following is a specification.

This invention relates to certain improvements on the patent for embossed sign-plates which was granted to me heretofore, No. 364,389, dated June 7, 1887, the improvements being designed with a View to simplify the process of manufacturing the embossed signplates described therein, so that they can be manufactured in a quicker and cheaper manner and without requiring the. keeping in stock of a number of block types; and the invention consists of the process herein described of making sheet-metal sign-plates, which comprises the following successive steps: first, producing the letters to be embossed from sheet-metal and carving the representation of the article from wood and cementing the same to a metallic plate and making the dies therefrom by casting; secondly, embossing the sign-plates by means of said dies, and, thirdly, coating the same with different colored Varnish and transferring the fatty colors to the representations of the articles before the last varnish color has dried, and, finally, drying the plates.

In the accompanying drawings, Figure 1 represents a front-view of the original from which the dies by which the embossed plates are pressed are made. Fig. 2 is a vertical transverse section, on line 2 2, Fig. 1, and Fig. 3 is a vertical longitudinal section, on line 3 3, Fig. 1.

Similar letters of reference indicate corresponding parts.

In carrying out my invention,I produce the original block from which the dies are made, by sawing the letters a by means of a scrollsaw from thin sheet-metal, preferably sheetzinc, and cementing the letters by means of Wax and turpentine on to a zinc foundationplate b.

The representations of the articles d that are to be produced in relief on the sign-plates are carved in wood and are also cemented on to the foundationplate. From the block thus obtained a sand-mold is made and a male die and the cast-iron relief figures which were heretofore employed are dispensed With and a simpler and quicker method of reproducing the original blocks for any desired kind of sign-plates produced.

In making the original block, care should be taken that the height of the letters of the relief figures above the foundation-plate should be about the same, so that the embossing of the sign-plates by means of the dies can readily be accomplished by one operation.

When a small number of embossed sign plates is to be made, the male die is covered by a soft rubber plate, While when larger quantities of sign-plates are to be made female dies of lead are produced, which are made in the following manner: The original block is coated with pulverized plumbago mixed with water and applied by means of a brush. An iron frame is then placed around the block and placed on a body of sand and leveled. The frame is then luted with clay and hot lead cast into the mold formed in this manner, by which a female die of lead is obtained, which is then separated from the original zinc plate and inserted into the plunger of the press, being then ready for embossing the sign-plates. The varnishing of the surface of the embossed plate is then accomplished in suitable colors, in the same manner as described in my patent heretofore referred to. The coloring is accomplished by means of an elastic hand-roller, by means of which the lithographic varnish colors are applied to the surface of the raised letters or other parts until the same are evenly covered with the color. The embossed objects or figures are then finished in oil colors or so called fatty inks. This is accomplished by printing the colors on an unsized tissue paper from the lithographic stones, then cutting up the same and transferring the different lettering to the embossed parts. The tissue paper is then moistened by means of a flat sponge which presses the color into all the depressed parts and permits the removal of the paper. If different colors are to be transferred, they are printed from different stones on tissue paper and then cut up into strips which are applied to the required positions on the ob jects in relief and transferred to the same by the moist sponge, as described. The different colors that are to be transferred to the raised objects can also be made on one and the same stone by leaving sufficient space between the lines of different colors and inkingall the lines by means of a roller on which the colors are placed at the same time, and then transferring them by a sheet of tissue paper, which is cut into strips, to the objects in relief, the tissue paper being removed by moistening with a sponge and Working in the colors by means of a roller. To dispense with the last covering layer of transparent varnish, the last varnish coat before the oil colors are applied is made somewhat thicker and permitted to dry but partly. By putting the oil colors on this partly dried varnish coating and transferring the plates then into an oven and drying them at a temperature of from 23 to 25 Reaumnr, the varnish penetrates or sweats through the oil colors and imparts to it an appearance as if all the colors were covered with a surface coating of varnish. After the sign-plates have remained for about two hours in the drying oven they are removed and immediately packed and shipped, so that a considerable saving in material, time and wages is obtained.

When the sign-plates are to be used either for firm names or for streets and house numbers, the zinc plate obtained before the plate which is first produced and used as one of the dies can be finished directly in colors in the manner described, in which case the printing in oil colors is dispensed with, as no objects in relief are called for in sign-plates of this class.

Having thus described my invention, I claim as new and desire to secure by Letters Patent The method herein described of making a sheet metal sign plate which consists in first embossing a sheet metal plate, producing raised letters and representations of articles advertised by said letters; coating the entire surface of the sign plate in lithographic var nish colors, leaving the last coat thereof in a partly dried state; then applying to the partly dried coating of the embossed representation of the articles fac-similes of the labels in fatty ink; and then subjecting the sign plate to a heating and drying operation, causing the fatty ink to sink into and become covered by the lithographic varnish coating, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses. V

ALOIS WINKLER.

Witnesses:

A. SCHLESSING, W. B. MURPHY. 

